Fig. 2
Associations of quantile mediansa of baseline daily step counts and all-cause mortality across included studies. Abbreviations: O:E, ratio of observed and expected deaths, AHR, adjusted hazard ratio; CI, confidence interval; Note: Error bars represent the lower and upper bounds of the 95% confidence interval. aQuantile medians of daily step counts at baseline were not reported by Jefferis and colleagues [17]. Therefore, the midpoints of the quantile ranges of daily step counts at baseline were plotted instead. bDwyer, 2015 reported the distribution of obeserved and expected deaths (confidence intervals not reported) by quantiles of daily step counts at baseline. Shading on the figure indicates the distinction in measure of association from the other four studies, all of which assessed the associations of quantiles of daily step counts at baseline and the adjusted hazard ratio for all-cause mortality